Modify table structure (merge cells) with jQuery

Answer 1

You actually need to add rowspan to ds10 and then remove ts11 from the second row here. Change you code from colspan to rowspan, add the following

$("#ts11").remove();

and you should get result you need. But i didn't personally try changing rowspan/colspan attributes via jquery, i'm just assuming it works well. Hope it helps.

p.s.: corrected numbers, thought u need to merge 9 and 10 first :)